air filtration systems

If you regularly fly, it may not be strange for the vents right above your seat.

When the aircraft flies high, the air gradually dilutes, so the aircraft needs a ventilation system to ensure sufficient oxygen supply to passengers at the same pressure as on the

The Cordis Hotel in Shanghai has been crowded in recent years, all thanks to the hotel's high quality air filtration system.

A vacuum cleaner operated by a Dutch company can filter 800,000m3 of gas per hour in a 300m radius.